SOS brake & braking system Exam|100% Verified PASS!!!

SOS brake & braking system Exam|100% Verified PASS!!! In a single anchor bendix drum type rear brake the secondary lining is longer than the primary Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining area is: smaller and goes toward the front of the car During a brake overhaul, you notice that the brake fluid seems to be very dirty and dark in color. What should you do? flush the system before the new parts are installed In order to bleed the system on a vehicle equipped with power brakes: None of the above Which of the following could be a symptom of over-torqued lug nuts? A brake pedal pulsation during braking. Which of the following describes the proper sequence to bleed brake lines on most rear wheel drive vehicles: RR, LR, RF, LF In disc brake caliper assemblies, the "square cut seal" is usually located: In the caliper piston bore When performing a caliper overhaul, what would you use to remove the pistons from the calipers? Compressed air Sliding caliper disc brake pads are kept in adjustment by the Square cut piston seal A cracked or torn vacuum diaphragm in a power booster would likely cause: Hard pedal with very high effort required When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement is felt. What can cause this problem? A rotor thickness variation While test driving a car, the mechanic finds that the right front brake "grabs". The most likely cause of this problem is: Brake fluid or grease on the brake linings. During a road test, you find that when normal breaking pressure is applied the pedal slowly goes to the floor. What is the likely cause of this problem? A leaking master cylinder primary piston seal. A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most likely a result of: Loose pads in the caliper Which of the following would most likely cause dragging brakes? A defective vehicle load sensor With the car standing still, you can hear a squeaking noise when applying the brake pedal slowly. What could cause this noise? Dry backing plate contact surfaces. There is a scraping sound coming from one rear brake. The sound stops when the brakes are applied. What is the likely cause of the problem? A broken shoe hold-down spring or pin If a drum brake self-adjuster seizes up, the likely result will be: A low pedal Which of the following can be used to check for rotor thickness variation? Dial indicator On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most likely cause is: A defective proportioning valve After putting a bearing race in a hub, you notice that the new race is loose and can spin in the hub. What should you do? Replace the hub When adjusting disc-drum brakes, you should: Adjust the rear brakes after releasing the parking brakes What type of rotor surface provides the best braking with new pads? A smooth, flat surface Which of the following is a quick way to determine whether the master cylinder is bad? There are no external leaks in the system. Pump up the brake pedal, then hold it firm. If the pedal slowly drops to the floor, the master cylinder is bad. You are rebuilding a master cylinder. What should you use to lubricate the internal parts? Brake fluid Which of the following is the most likely cause of low fluid level in the master cylinder? Worn brake pads and linings After drum brakes have been applied and released, the brake fluid returns to the master cylinder reservoir. What causes it to return? Brake shoe return springs Which of the following describes the correct sequence for bleeding brake lines on most front wheel drive vehicles? RR,LR, RF, LF Technician A says that excessive pedal travel can be caused by low brake fluid levels; Technician B says that the excessive pedal travel can be caused by air in the hydraulic system? Who is right? Both A and B All of the following are steps in the procedure for servicing a typical dual master cylinder, EXCEPT: Clean the master cylinder with a degreasing solvent The brakes of a car tend to drag, which of the following could be the cause? A stuck wheel cylinder or caliper piston Which of the following conditions does not dictate that the brake hydraulic system be flushed after the necessary repairs have been made? Evidence of air in the system When repairing damaged brake line, which of the following is correct? Replace entire line that is damaged with a new line bent to the right shape using a tube bender Technician A says a bad brake hose may cause a fluid leak. Technician B says a defective bake hose may cause a restriction in the hydraulic circuit. Who is right? Both A & B Technician A uses a pressure tester to check the operation of the accumulator, hydraulic pump, and controls of an ABS system during diagnosis. Technician B checks an ABS system by checking the codes in the control computers memory. Who is right? Both A & B Technician A says that brake drums should never be matched beyond the maximum diameter designated on the drum. Technician B says that a brake drum with more than 0.005 inch out-of-roundness should be machined true on a lathe. Who is right? Both A & B